Cooling radiators



H. N. SEARLES.

COOLING RADIATOR.

APPLICATION FILED MAY 12, 1920.

1,401,562, Patented Dec. 27, 1921.

W W5 ATTORNEY Al -miss? UNITED STATES PATENT OFFICE.

HERBERT N. SEARLES, OF OYSTER BAY, NEW YORK.

COOLING RADIATORS.

Specification of Letters Patent.

Patented Dec. 27, 1921.

Application filed May 12, 1920. Serial No. 380,781.

cause it is peculiarly adapted thereto, but it will be understood that it is equally applicable to motor boats, air ships and other mechanism where cooling of the engine or motor is desired, suitable mechanical changes of course being made as necessity may re quire.

a This present invention is an improvement 11 on that patented to me February 11, 1919, 0. 1,293,946, and under it my previous nvention is made more eflicient in operation in cases where the power of the engine is such that great heat is generated and unusual radiator capacity or cooling effect is desired.

In my former invention the fan and radia tor were combined, in one and the same structure, thus securing compactness and to some extent reduction in cost, but the air blasts in the area near the center of the fan were inevitably materially less than those within the other areas of the fan. Conseliently, there is apt to be some inequality in t e cooling efliciency of the radiator because .the water which passes through certain of its tubes is necessarily cooled to a greater extent than that which passes through other of its tubes.

It is the purpose of this present invention, therefore, to so construct an apparatus that all the advantages of the former invention,

i z. e., the employment of a suitable radiator,

preferably but not necessaril horizontally disposed, located anywhere esired on the automobile, or equivalent structure, ma be realized, and the radiator may be coole by a blast of air which shall be practically uniform throughout the entire area of the radiator, thus cooling each and every part of each and every tube of the radiator to substantiall the same degree, and this improvement [is e ected by generating a blast of air or forced circulation by a blower, or its equivalent, outside of the radiator structure, and confining and conveying the blast, under more or less com ression, into a "chamber located by the si e of and preferably, although not necessarily, above the radiator tubes, in which chamber the air distribution shall be practically uniform, so that it will be discharged through and upon the radiator tubes with substantially, if not identically equal volume throughout all of the area of the radiator.

It will, of course, be understood by those familiar with such matters that the water or other cooling medium will be made to circulate through the Water jacket of the engine,

and through the tubes of the radiator in any preferred manner, and by the employment of any suitable devices such as by the use of a pump with appropriate manifold, suitable piping, etc. These are not illustrated because they may be constructed and arranged in a great variety of forms.

Referring to the drawings, Figure 1 is a side elevation showing diagrammatically such parts only' as are necessary for an understanding of the invention; Fig. 2 is a top plan view showing diagrammatically the parts illustrated in Fig. 1.

1 represents the side beams 0r sills of the carchassis, in this case represented as suitable channel bars of steel, 2 the hangers, which support the radiator 3. The hangers may beneficially be bolted or riveted to the sills 1 by rivets or bolts 4:, and the radiator is rigidly attached to them in any preferred manner. The radiator tubes are entirely exposed throughout the entire area of the radiator. 5 is a chamber, preferably made of sheet metal, which has an air-tight top, sides and ends, which latter are joined at their lower edges air tight to the side and end pieces of the frame of the radiator proper. The bottom of the chamber 5 is entirely open so that air forced into it may freely pass downwardly between the tubes of the radiator proper. 6 is a blower, fan, or equivalent device, preferably a blower, as illustrated, which is supported in any suitable manner, preferably by metallic brackets 7 from the sills of the chassis. 8 is the shaft of the blower, which is driven by the engine through any suitable power transmitting devices. 9 is an air trunk which confines the blast from the blow-er, or its equivalent, and conveys it to the air chamber 5. It is preferably expanded as it extends from the blower, so that where it enters the air chamber 5 it is substantially the entire width thereof, and thus the air blasts will be delivered into the chamber in practically equal volume throughout. i

. I have shown the radiator, the air chamber and air trunk where it joins the chamber as occupying substantially the entire space between the sills 1'. It will be understood, however, that ordinarily these parts will not by any means be so large as shown. I so illustrate them merely to show the great capacity that the cooling devices have in the event that excessive cooling efiiciency shallbe desired, as, for instance, in trucks of unusual tonna e.

b It will be note that the air chamber and also the upper part of the blower casing are carried upwardly into the space between the sills of the chassis so as to the better utilize the space and give the greatest possible road clearance. This is my preferred construction, but is not essential in the event that the construction of the automobile, or equivalent structure, is such thatthis is not feasible or desirable. Indeed, when my invention is employed on motor boats and the like, it will'sometimes be preferred to bring the weight as low down as possible, so that a different method of arranging and supporting the blower and theair chamber will be preferable. In view of the simplicity of the apparatus and the well known physical laws involved, no explanation of its operation is necessary. Attention'is called, however, to the fact,rthat inasmuch 'as the blast from the blower is distributed throughout the air chamberin substantially equal volume and pressures, its escape from the air chamber upon and between the tubes of the radiator will be similarly substantially equal throughout, so that all parts of each ofthem will be cooled to substantially the same degree. Of course the well known baflie plates or air deflectors, not shown, may be em ployed within the air chamber, if desired.

It will be obvious to those who are familiar with such mattersthat modifications may: be made in the details of construction and relative location of the parts without departing from the essentials of the invention. I therefore do not limit myself in this respect. I will say, however, that for automobile use, the illustrated construction is a desirable one, for a series of reasons, among them, road clearance, the utilization of gravity, plus the air blast, for keeping the radiator free from dust and other foreign matter, and the arrangement of the radiator tubes horizontally instead of vertically, which latter feature I shall claim herein in combination with the features of this invention.

I claim:

1. In a cooling apparatus of the class stated the combination of a tubular radiator entirely open at both top and bottom, a chamber having air-tight top, sides and ends, but an entirely open bottom superposed upon one of the open sides of the radiator, a blower outside of the radiator constructed and arranged to discharge into an air trunk connecting the blower with an air-chamber, said air trunk itself, and means to operate the blower.

2. In a cooling apparatus of the class stated the combination of a horizontally arranged tubular radiator entirely open at both top and bottom, a chamber having an air-tight top, sides and ends, but an entirely open bottom superposed upon the upper open side of the radiator, a blower outside the radiator constructed and arranged to discharge into the air trunk connecting the air-chamber with the radiator, said air trunk itself, and means to operate the blower.

3. In combination with the chassis of an automobile, a cooling apparatus of the class stated embodying a horizontally arranged tubular radiatorentirely open at both sides, a chamber having air-tight top, sides and ends superposed upon the open upper side of the radiator, a blower outside of the radiator constructed and arranged to discharge into an air trunk connecting the blower with the chamber, said air trunk itself and means to operate the blower, a part of the air chamber and of the blower being supported in the open space between the sills of the automobile chassis and beneath the lloor thereof.

In testimony whereof I have signed my name to this specification.

HERBERT N. SEARLES. 

